192 lines
10 KiB
Racket
192 lines
10 KiB
Racket
#lang racket/base
|
||
|
||
;; Functions that create legend entries and lists of legend entries.
|
||
|
||
(require racket/class racket/match racket/list racket/string racket/sequence racket/contract
|
||
"contract.rkt"
|
||
"contract-doc.rkt"
|
||
"format.rkt"
|
||
"draw.rkt"
|
||
"utils.rkt")
|
||
|
||
(provide (all-defined-out))
|
||
|
||
(struct legend-entry (label draw) #:transparent)
|
||
|
||
;; ===================================================================================================
|
||
;; Line legends
|
||
|
||
(defproc (line-legend-entry [label string?]
|
||
[color plot-color/c] [width (>=/c 0)] [style plot-pen-style/c]
|
||
) legend-entry?
|
||
(legend-entry label (λ (pd x-min x-max y-min y-max)
|
||
(define y (* 1/2 (+ y-min y-max)))
|
||
(send pd set-pen color width style)
|
||
(send pd set-alpha 1)
|
||
(send pd draw-line (vector x-min y) (vector x-max y)))))
|
||
|
||
(defproc (line-legend-entries [label string?] [zs (listof real?)] [z-labels (listof string?)]
|
||
[colors plot-colors/c] [widths pen-widths/c] [styles plot-pen-styles/c]
|
||
) (listof legend-entry?)
|
||
(define hash
|
||
(for/fold ([hash empty]) ([z (in-list zs)]
|
||
[z-label (in-list z-labels)]
|
||
[color (in-cycle (maybe-apply/list colors zs))]
|
||
[width (in-cycle (maybe-apply/list widths zs))]
|
||
[style (in-cycle (maybe-apply/list styles zs))])
|
||
(assoc-cons hash (list color width style) z-label)))
|
||
|
||
(reverse
|
||
(for/list ([entry (in-list hash)])
|
||
(match-define (cons args vs) entry)
|
||
(apply line-legend-entry
|
||
(cond [(= 1 (length vs)) (format "~a = ~a" label (first vs))]
|
||
[else (format "~a ∈ {~a}" label (string-join (reverse vs) ","))])
|
||
args))))
|
||
|
||
;; ===================================================================================================
|
||
;; Rectangle legends
|
||
|
||
(defproc (rectangle-legend-entry [label string?]
|
||
[fill-color plot-color/c] [fill-style plot-brush-style/c]
|
||
[line-color plot-color/c] [line-width (>=/c 0)]
|
||
[line-style plot-pen-style/c]) legend-entry?
|
||
(legend-entry label (λ (pd x-min x-max y-min y-max)
|
||
(send pd set-brush fill-color fill-style)
|
||
(send pd set-pen line-color line-width line-style)
|
||
(send pd set-alpha 1)
|
||
(send pd draw-rectangle (vector x-min y-min) (vector x-max y-max)))))
|
||
|
||
(defproc (rectangle-legend-entries [label string?] [zs (listof real?)]
|
||
[fill-colors plot-colors/c] [fill-styles plot-brush-styles/c]
|
||
[line-colors plot-colors/c] [line-widths pen-widths/c]
|
||
[line-styles plot-pen-styles/c]) (listof legend-entry?)
|
||
(define z-min (first zs))
|
||
(define z-max (last zs))
|
||
(define digits (digits-for-range z-min z-max))
|
||
(define hash
|
||
(for/fold ([hash empty]) ([z (in-list zs)]
|
||
[fill-color (in-cycle (maybe-apply/list fill-colors zs))]
|
||
[fill-style (in-cycle (maybe-apply/list fill-styles zs))]
|
||
[line-color (in-cycle (maybe-apply/list line-colors zs))]
|
||
[line-width (in-cycle (maybe-apply/list line-widths zs))]
|
||
[line-style (in-cycle (maybe-apply/list line-styles zs))])
|
||
(define entry-label (real->plot-label z digits))
|
||
(assoc-cons hash (list fill-color fill-style line-color line-width line-style) entry-label)))
|
||
|
||
(reverse
|
||
(for/list ([entry (in-list hash)])
|
||
(match-define (cons (list fill-color fill-style line-color line-width line-style) vs) entry)
|
||
(rectangle-legend-entry (if (= 1 (length vs))
|
||
(format "~a = ~a" label (first vs))
|
||
(format "~a ∈ {~a}" label (string-join (reverse vs) ",")))
|
||
fill-color fill-style line-color line-width line-style))))
|
||
|
||
;; ===================================================================================================
|
||
;; Interval legends
|
||
|
||
(defproc (interval-legend-entry
|
||
[label string?]
|
||
[fill-color plot-color/c] [fill-style plot-brush-style/c]
|
||
[line-color plot-color/c] [line-width (>=/c 0)] [line-style plot-pen-style/c]
|
||
[line1-color plot-color/c] [line1-width (>=/c 0)] [line1-style plot-pen-style/c]
|
||
[line2-color plot-color/c] [line2-width (>=/c 0)] [line2-style plot-pen-style/c]
|
||
) legend-entry?
|
||
(legend-entry label (λ (pd x-min x-max y-min y-max)
|
||
(send pd set-alpha 1)
|
||
;; rectangle
|
||
(send pd set-pen line-color line-width line-style)
|
||
(send pd set-brush fill-color fill-style)
|
||
(send pd draw-rectangle (vector x-min y-min) (vector x-max y-max))
|
||
;; bottom line
|
||
(send pd set-pen line1-color line1-width line1-style)
|
||
(send pd draw-line (vector x-min y-max) (vector x-max y-max))
|
||
;; top line
|
||
(send pd set-pen line2-color line2-width line2-style)
|
||
(send pd draw-line (vector x-min y-min) (vector x-max y-min)))))
|
||
|
||
(defproc (interval-legend-entries
|
||
[label string?] [zs (listof real?)] [z-labels (listof string?)]
|
||
[fill-colors plot-colors/c] [fill-styles plot-brush-styles/c]
|
||
[line-colors plot-colors/c] [line-widths pen-widths/c] [line-styles plot-pen-styles/c]
|
||
[line1-colors plot-colors/c] [line1-widths pen-widths/c] [line1-styles plot-pen-styles/c]
|
||
[line2-colors plot-colors/c] [line2-widths pen-widths/c] [line2-styles plot-pen-styles/c]
|
||
) (listof legend-entry?)
|
||
(define hash
|
||
(for/fold ([hash empty]) ([za (in-list zs)]
|
||
[zb (in-list (rest zs))]
|
||
[la (in-list z-labels)]
|
||
[lb (in-list (rest z-labels))]
|
||
[fill-color (in-cycle (maybe-apply/list fill-colors zs))]
|
||
[fill-style (in-cycle (maybe-apply/list fill-styles zs))]
|
||
[line-color (in-cycle (maybe-apply/list line-colors zs))]
|
||
[line-width (in-cycle (maybe-apply/list line-widths zs))]
|
||
[line-style (in-cycle (maybe-apply/list line-styles zs))]
|
||
[line1-color (in-cycle (maybe-apply/list line1-colors zs))]
|
||
[line1-width (in-cycle (maybe-apply/list line1-widths zs))]
|
||
[line1-style (in-cycle (maybe-apply/list line1-styles zs))]
|
||
[line2-color (in-cycle (maybe-apply/list line2-colors zs))]
|
||
[line2-width (in-cycle (maybe-apply/list line2-widths zs))]
|
||
[line2-style (in-cycle (maybe-apply/list line2-styles zs))])
|
||
(define entry-label (format "[~a,~a]" la lb))
|
||
(assoc-cons hash
|
||
(list fill-color fill-style line-color line-width line-style
|
||
line1-color line1-width line1-style
|
||
line2-color line2-width line2-style)
|
||
entry-label)))
|
||
|
||
(reverse
|
||
(for/list ([entry (in-list hash)])
|
||
(match-define (cons (list fill-color fill-style line-color line-width line-style
|
||
line1-color line1-width line1-style
|
||
line2-color line2-width line2-style)
|
||
vs)
|
||
entry)
|
||
(interval-legend-entry (format "~a ∈ ~a" label (string-join (reverse vs) " ∪ "))
|
||
fill-color fill-style line-color line-width line-style
|
||
line1-color line1-width line1-style
|
||
line2-color line2-width line2-style))))
|
||
|
||
(defproc (contour-intervals-legend-entries
|
||
[label string?] [zs (listof real?)] [z-labels (listof string?)]
|
||
[fill-colors plot-colors/c] [fill-styles plot-brush-styles/c]
|
||
[line-colors plot-colors/c] [line-widths pen-widths/c] [line-styles plot-pen-styles/c]
|
||
[contour-colors plot-colors/c] [contour-widths pen-widths/c]
|
||
[contour-styles plot-pen-styles/c]) (listof legend-entry?)
|
||
(define n (- (length zs) 2))
|
||
(define ccs (append (list 0)
|
||
(sequence-take (in-cycle (maybe-apply/list contour-colors zs)) 0 n)
|
||
(list 0)))
|
||
(define cws (append (list 0)
|
||
(sequence-take (in-cycle (maybe-apply/list contour-widths zs)) 0 n)
|
||
(list 0)))
|
||
(define css (append '(transparent)
|
||
(sequence-take (in-cycle (maybe-apply/list contour-styles zs)) 0 n)
|
||
'(transparent)))
|
||
|
||
(interval-legend-entries label zs z-labels
|
||
fill-colors fill-styles line-colors line-widths line-styles
|
||
ccs cws css (rest ccs) (rest cws) (rest css)))
|
||
|
||
;; ===================================================================================================
|
||
;; Point legends
|
||
|
||
(defproc (point-legend-entry [label string?] [sym point-sym/c]
|
||
[color plot-color/c] [size (>=/c 0)] [line-width (>=/c 0)]) legend-entry?
|
||
(legend-entry label (λ (pd x-min x-max y-min y-max)
|
||
(send pd set-pen color line-width 'solid)
|
||
(send pd set-alpha 1)
|
||
(send pd draw-glyphs
|
||
(list (vector (* 1/2 (+ x-min x-max)) (* 1/2 (+ y-min y-max))))
|
||
sym size))))
|
||
|
||
(defproc (vector-field-legend-entry [label string?] [color plot-color/c]
|
||
[line-width (>=/c 0)] [line-style plot-pen-style/c]
|
||
) legend-entry?
|
||
(legend-entry label (λ (pd x-min x-max y-min y-max)
|
||
(send pd set-pen color line-width line-style)
|
||
(send pd set-alpha 1)
|
||
(send pd draw-arrow-glyph
|
||
(vector (* 1/2 (+ x-min x-max)) (* 1/2 (+ y-min y-max)))
|
||
(* 1/4 (- x-max x-min)) 0))))
|